A007946 - OEIS

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A007946 as a simple table

`n`		`a(n)`
`0`		`2`
`1`		`9`
`2`		`36`
`3`		`140`
`4`		`540`
`5`		`2079`
`6`		`8008`
`7`		`30888`
`8`		`119340`
`9`		`461890`
`10`		`1790712`
`11`		`6953544`
`12`		`27041560`
`13`		`105306075`
`14`		`410605200`
`15`		`1602881040`
`16`		`6263890380`
`17`		`24502865310`
`18`		`95937144600`
`19`		`375945078600`
`20`		`1474358525640`
`21`		`5786272150230`
`22`		`22724268808176`
`23`		`89301056353200`
`24`		`351140573438200`
`25`		`1381487341784004`

[2,9,36,140,540,2079,8008,30888,119340,461890, 1790712,6953544,27041560,105306075,410605200, 1602881040,6263890380,24502865310,95937144600, 375945078600,1474358525640,5786272150230, 22724268808176,89301056353200,351140573438200, 1381487341784004]

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Last modified April 17 21:01 EDT 2024. Contains 371767 sequences. (Running on oeis4.)